Senior Java Full Stack Engineer

83zero Ltd; Greater London; Hybrid; GBP 60,000 - 70,000; Full time

Benefits offered by this job

Healthcare options

Hybrid work model

Job summary

83zero Ltd in the United Kingdom is seeking a Senior Java Full Stack Engineer with strong backend and frontend experience, plus proven leadership and client-facing skills to deliver enterprise digital solutions.

Design and build Java/Spring Boot microservices and React UIs, mentor teams, collaborate with clients and stakeholders, and drive REST APIs, cloud, and CI/CD initiatives. Hybrid role (1–2 days/week) with base locations London, Bristol, Manchester or Glasgow; SC eligibility required.

Qualifications

• Experience building RESTful microservices with Java and Spring Boot.
• Frontend experience with React, JavaScript/TypeScript, HTML/CSS.
• Proven leadership or mentoring of development teams.
• Strong stakeholder management and client-facing communication.
• Experience with AWS or Azure cloud platforms.
• Experience with REST API design and integration.
• Familiar with Git-based workflows.
• Experience with NoSQL MongoDB and PostgreSQL.

Responsibilities

• Design, develop and maintain scalable microservices with Java and Spring Boot.
• Build responsive web apps using React and TypeScript.
• Provide technical leadership and guidance to teams.
• Serve as a point of contact for clients and stakeholders.
• Translate business needs into technical solutions.
• Develop and integrate REST APIs and cloud-native apps.
• Own full SDLC from design to deployment and support.
• Collaborate in Agile teams to deliver high-quality software.
• Contribute to CI/CD pipelines and DevOps practices.

Skills

REST microservices

Java & Spring Boot

React Frontend

TypeScript

Leadership

Stakeholder management

Client-facing communication

AWS or Azure

Docker

CI/CD (GitLab CI / GitHub Actions /JEN

Agile methods

Terraform

MongoDB

PostgreSQL

Tools

Git

GitHub

GitLab

Docker

Docker Compose

Terraform

Jenkins

GitHub Actions

Kubernetes

Job description

Senior Java Full Stack Engineer

• Salary: £60,000 - £70,000 plus benefits, perks, and healthcare options!
• Job type: Permanent | Hybrid (1-2 days per week) | Occasional travel to client sites
• Security Clearance: Must be SC eligible
• Base locations: London, Bristol, Manchester or Glasgow

Overview

We're looking for a Senior Java Full Stack Engineer with strong backend and frontend development experience, alongside proven experience leading teams, managing stakeholders and working directly with clients

You'll play a key role in delivering innovative digital solutions for enterprise clients, providing both strong technical leadership and hands-on development expertise. You'll work closely with clients, architects, engineers and business stakeholders to understand requirements, shape solutions and ensure successful delivery across complex digital transformation programmes.

Your Role

• Design, develop and maintain scalable microservices using Java and Spring Boot.
• Build responsive web applications using React, JavaScript/TypeScript, HTML and CSS.
• Provide technical leadership and guidance to development teams, supporting engineers and encouraging best practice.
• Act as a key point of contact for clients and senior stakeholders, communicating technical concepts and project progress clearly.
• Gather requirements and work with stakeholders to translate business needs into effective technical solutions.
• Develop and integrate REST APIs and cloud-native applications.
• Take ownership across the full software development lifecycle, from design through to deployment and support.
• Support the planning, coordination and delivery of technical work across projects.
• Collaborate within Agile teams to deliver high-quality software solutions.
• Contribute to CI/CD pipelines, DevOps practices and secure digital platforms.

Skills & Experience

• Strong experience building RESTful microservices using Java and Spring Boot.
• Frontend development experience with React, JavaScript/TypeScript, HTML and CSS.
• Proven experience leading or mentoring development teams.
• Strong stakeholder management and client-facing communication skills.
• Experience working directly with clients to understand requirements and deliver technical solutions.
• Experience designing and integrating REST APIs.
• Proficiency with Git and platforms such as GitHub or GitLab.
• Experience working with AWS or Azure.
• Hands-on experience with Docker and Docker Compose.
• Experience with CI/CD tools such as GitLab CI, GitHub Actions or Jenkins.
• Experience working in Agile software development teams.
• Experience with Infrastructure as Code tools such as Terraform.
• Familiarity with NoSQL databases, particularly MongoDB.
• Experience with SQL databases such as PostgreSQL.

What You'll Gain

• Work on high-profile digital transformation programmes across multiple industries.
• Exposure to modern technologies including Java, Kotlin, Node.js, Spring Boot, React, AWS, Azure, Docker and Kubernetes.
• Access to training and certifications across cloud, software engineering, DevOps, cybersecurity and Agile delivery.
• Career development through mentoring, technical communities and knowledge-sharing sessions.
• A collaborative culture with opportunities to connect through team events, networking and innovation activities.

Additional Information:

• UK-wide client travel may be required depending on project needs.
• The right to live and work in the UK is essential.
• Successful applicants must be eligible to obtain Security Clearance (SC).